US2176940A

US2176940A - Automatic toaster

Info

Publication number: US2176940A
Application number: US183659A
Authority: US
Inventors: Allan M Young
Original assignee: Manning Bowman & Co
Current assignee: Manning Bowman & Co
Priority date: 1938-01-06
Filing date: 1938-01-06
Publication date: 1939-10-24
Anticipated expiration: 1956-10-24

Description

Oct. 24, 1939. YOUNG 2,176,940

Filed Jan. 6;.1938 3 Sheets-Sheet l INVENTURQ AZWWRMM A TTORNEYS.

AV/an M. Yul/2y Oct. 24, 1939,

' A. M. YOUNG 2,176,940

AUTOMATIC 'TOASTER Filed Jan. 6, 1938 3 Sheets-Sheet 3 E 37 yum 15 if: I

, will 1 2 II I I: \ol\ y u O\)' 3 32 I 24- A I 27 l 0 o L ;.A [w I?! 0 2i [I human? "4 wn I Hill 2 F955.

13 ll 214,1? J I I I L f 1 I I: H l v 38' I 7 T t 73 j 20 INVENTDR.

'8 j I 2 M m 14mm; il B W 2 I Hm ATTORNEYS.

. showing the mechanism.

Patented Oct. 24, 1939 PATENT OFFICE 2,176,940 auroma'rrc 'roas'rna Allan M. Young, Meriden, Conn., assignor to Manning, Bowman & 00., Meriden, Conn., a corporation of Delaware Application January 6, 1938, Serial No. 183,659

20 Claims.

This invention relates to automatic electric toasters and the like.

One object of the invention is an automatic toaster embodying a timing and automatic switch mechanism and having a novel means whereby the toast may be inspected at any time without resetting or interfering with the operation of the timing and switch mechanism.

A further object of the invention is a toaster of the above indicated character having a common starting and toast I inspection lever with mechanism associated therewith permitting theappear.

For a better understanding of the invention reference may be had to the accompanying drawings forming a part of this application, wherein:

, Fig. 1 is a side view partly'in section of a toaster embodying the invention;

'Fig. 2 is a plan view thereof partly in section;

Fig. 3 is a sectional view along the line 3-3 of Fig. 2.

Fig. 4 is a sectional view along the-line 4-4 of 35 Fig.2-

Fig. 5 is a sectional view similar to Fig. 4.

Fig. 6 is an end view showing the mechanism in the off position; and

Fig. '7 is an end view, with parts broken away,

Referring to the drawings the invention is illustrated as embodied in a toaster having a casing l which is generally of rectangular shape in plan, side and end views with a base support 2 therefor 45 of suitable material, as for example wood, but it is understood that the invention is applicable to other types and design of casings and supports therefor. The toaster frame of the embodiment shown comprises a base plate I, a back vertical 5' and plate 4, and a pair of front spaced

vertical plates

5 and 6, these plates being held together by any suiable means comprising upper and lower iastening and spacingelements 1 and 8. All of these elements may be of sheet metal or other 55 suitable mater al- The e c ica beati s elements are carried by these upper and lower spacing elements 1 and 8, and the members I and 8 also carry the vertically disposed wires 9 which form vertically disposed chambers for the reception of the slices of toast and form spacing and 5 centering means for retaining the toast in spaced heating relation to the electric heaters.

In each of the toasting chambers is disposed a rack l0 which during the toasting operation is disposed at the bottom of the toast chamber. 10 These racks ID are formed from a U-shaped member l2 with the legs which form the racks l0 passing through vertical guide slots H formed in the end platei. This U member I2 is fastened to a vertical guide piece l3 having its upper and lower ends turned at right angles to form the parts l3 and these parts l3 are perforated to receive the guide post M, the latter thus guiding the member l3 up and down. To the guide member I3 is fastened a starting and toast inspecting member I5 and in the particular embodiment shown this member 15 is carried by an angle piece l6 formed integrally with the guide member l3, this angle member is passing through a vertical guide slot ll formed in the end plate 6. The vertical guide post It may be secured in any suitable manner, as for example by means of ears [4' formed on the upper and lower edges of the end plate 5.

The embodiment of the invention shown is of the ejector type comprising an elevator or ejector 39 2Ilthreaded over the guide post I and disposed underneath the lower part l3 of the rack guide l3. This elevator 20 is provided with a vertical guide plate 20' sliding between the guide member I3 andthe plate It, and an elevating or ejecting spring 2! is fastened at its lower end to the ele-- vator 2ll-and at its upper end to either of the fastening lugs 22 formed from the end plate 6, and a bumper spring 23 is disposed around the upper end of the guide post and between the upper guide part l3 and the upper fastening part or ear M. Fastened to the elevator guide plate 20' is a pin 24 which projects through the guide slot H in end plate 6 and is provided with a roller 25 I thereon. The bottom of the slot I1 is formed into 5 a curve with the upper surface 26 thereof forming a shoulder for retaining the pin 24 in its lowermost position in the slot l1 until it is kicked out by the timing mechanism as hereinafter described.

The timing mechanism is indicated generally at 21 and the automatic switch is indicated generally-at 28 and at 29 is indicated generally the conventional means for setting the timing mechanism for light or darktoast. At 30 and 3| are there is a guide roller ll disposed on the back 7 passes beyond the gate 49 in the 6'5 away from the slot the roller 39.

indicated lever members connected by a link 32 for setting the timing mechanism and closing the switch, that is, by actuating the lever 3| the timer and the switch may be set in the usual and conventional manner, To the outer end of the lever 3| is pivotally fastened a setting member or pawl 33, which extends generally in an-upward direction, and having at its upper end a pawl tooth or lug 34 which, with the mechanismin the ofi position, is disposed underneath and in the path of a roller 39 carried by the angle member 6 which carries the manually operated member ii. The pawl is held in this position by a follower spring 35 which is fastened at its lower end to the pawl 33, as for example by being fastened to a lug or car 36 formed from the pawl 33. The follower spring 35 is fastened at its upper end to a, follower roller 37 which is adapted to traverse a slot 38 formed in the end plate 6. This sfit at its upper end is observed to curve towards the guide slot l1 and the actuating roller 39, and, accordingly, when the follower roller of the slot 38 the pawl 33, through the spring 35 is urged over to assume a position with the pawl tooth 3i underneath and in the path of However, when .the pawl 33 is moved downwardly to set the timer and the switch, the roller 31 is caused to traverse the slot 33 with the result that the roller moves laterally away from the roller 39, thereby putting tension on' the spring 35 and yieldingly urging or tending to urge the pawl 33 to a'position out of the path of the roller 33. The roller 31 is of spool shape and may be inserted in the slot at the enlarged circular portion 39' at the bottom for assembly. In order toassure the pawl 33 remaining with its tooth 34 underneath the actuating and setting roller 39 during the time setting operation, an elongated vertical gate 49 is provided for retaining the pawl 33 in the actuating and setting position until the switch and timing mechanism is set. For this purpose of the upper end of the pawl member 33 which engages the gate 40 on the side thereof towards the slot I! and positively holds the pawl 33 in a position underneath the actuating roller 39 during the downward movement of the pawl 33 for actuating the lever 3| and setting the timing and switch mechanisms.- This gate 49 is formed in any suitable manner, as for example by means of a vertical flange turned from the end plate 6. The length and position of this as to assure the setting of the t er and the switch before the roller l| passes beyond the lower end of the gate, but when the roller 4| downward stroke the pawl 33;is actuated by the spring 35 to pivot about the lever 3| in a direction away from the actuating roller 39 so that when the lever 3| and the pawl 33 begin to move upward during the toasting operation the roller 4| is caused to follow along the side of the gate 40 J1 and actuating roller 39, positively held out of the path 39 during that part of the return and the pawl 33 is of the roller stroke.

At the end of the toasting operation the roller 25 is'kicked out of the lowerend' of the slot thereby permitting the elevator or ejector spring 2| to elevate the toast rack to the uppermost position with the toast then occupying the ejected position, For this purpose the lever 3| is provided with a tripping device. or trigger 43 which at the end of the toasting operation 31 is in the upper end gate is suchv engages the roller 25 and pushes the pin and portion of the slot i'l,

roller into the vertical permitting spring 2| to lift the'elevator and rack. In the locking position the roller. 25 as above indicated is held within the curved lower end of the slot against the upper surface or shoulder 26. This locking and retention of the roller 25 in the lower end of slot i1 is assisted by the ejector spring 2| which is fastened to the end of the elevator .20 at a pointremoved fromthe slot i1 and which through the loose fit of the elevator or ejector 20 with the post l4 tends to yieldingly tilt the member 20 and urge the roller 25 into the curved lower end of the slot IT. The operation of the toaster is clear from the above. The adjusting mechanism 29 is set to give the desired time for the toasting operation. The operator then presses down upon the starting button or member i5, causing the actuat ing and setting roller 39 carried thereby to engage the pawl 33 and actuate the same in av downward direction, thus and 30 to close' the switch, and set the timer. When the timerand switch are thus set, the

. roller 4| passes down beneath the lower end of the gate 40, whereupon the spring 35, due to the lateral tension thereoflswings the pawl 33 to a position out of the path of the roller 39 and to a position where the roller "is disposed on the opposite side of the gate- 40. During the toasting operation the lever 3| and the pawl 33 are gradually moved upward, but the pawl 33 is positively held out of the path of the actuating roller 39 by means of the follower spring 35 and the gate 40 and the roller 4| on the pawl 33. Thus the user may lift the toast rack by means of the button I to inspect the toast at any time during the toasting operation without interfering with the toasting operation and without resetting the timer. By downward movement of the button or handle IS, the elevator or ejector 20 is locked in its downward position againstthe tension of spring 2|, the pinand roller 24-25 being locked into the lower end of slot I1 as described above. At the end of the toasting operation, the lever 3| through the cam or trigger 43 moves the pin 24-25 into the vertical part of slot I1 and the ejector spring 2| lifts the elevator 20 and ejects the toast. At

the end of the-toasting operation, the spring 35,

having been put under tension by the roller 31 traversing the curved slot 38 moves'thepawl 33 past the upper end of the gate 40 to a position underneath the roller 39;

I claim:

1. In an automatic electric toaster a timing and switch mechanism, means for manually setting said timing and switch mechanism including a setting member adapted to occupy a position in and to follow the path of the manual means during the setting operation butto occupy a position out of the path of the manual means and to follow a different path during the toasting operation, means for retaining the setting member in the path of the manual means during the setting operation and removing the setting member out' of the path of the manual means and causing the same to follow a different path during the toasting operation, and ineans supporting the toast whereby the manual means may be operated to bring the toast to an inspection position during the toasting operation. 2. In an automatic electric toaster a timing and switch mechanism, means for manually setting saidtiming and switch mechanism including a setting member adapted to occupy posh moving the levers 3| tions both in and-out of the path of the manual means, means for retaining the setting member in the path of the manual means during the setting operation and removing the setting member out of the path of the manual means during the toasting operation, means supporting the toast whereby the manual means may be operated to bring the toast to an inspection position during the toasting operation, spring-actuated toast ejecting means for ejecting the toast at the end of the toasting operation, means for locking the toast ejecting means in the toasting position, said toast ejecting means being operated by the manual means "during the setting operation, against the tension of the spring to lock the same, and means for tripping the locking mech: anism at the end of,the toasting operation.

3. In an automatic electric toaster a timing and switch mechanism, means for manually setting said timing andswitch mechanism including a' setting member adapted to occupy positions both in and out of the path of the manual means, means for retaining the setting member in the path of the manual means during the setting operation and removing the settingmember out of the path of the manual means during the toasting operation, and means supporting the toast whereby the manual means may be operated to bring the toast to an inspection position during the toasting operation, the timing and switch mechanism comprising a pivoted lever and the setting member is pivoted thereto with the free end thereof adapted to be disposed in the path of the manual means during the setting operation.

4. In. an automatic electric toaster a timin 1 and switch mechanism, means for manually setting said timing and switch mechanism includ-. ing a setting member adapted to occupy positions both in. and out of the path of the manual means, means for retaining the setting member in 'thepath of the manual means during the setting operation and removing the setting member out of the path of the manual means during the toasting operation, and means supporting the toast whereby the manual means may be operated to bring the toast to'an inspection position during the toastingoperation, the timing and switch mechanism comprising a pivoted lever and the setting member is pivoted thereto with the free end thereof adapted tobe disposed in the path of the manual means during the setting operation, and a gate. one side of which is engaged by the setting member during the setting operation and the other side of which is engaged by the setting member during the toasting operation.

5.-In an automatic electric toaster a timing and switch mechanism, means formanually setting said timing and switch mechanism including a setting member adapted to occupy positions both in and out of the path of the manual means, means for retaining the setting member in the path of the manual-means during the setting operation and removing the setting member out of the path of the manual means during the toasting operation, and means supporting the toast whereby the manual means may beoperated to bring the toast to an inspection position during the toasting operation, the timing and 'switch mechanism comprising a pivoted lever and the setting member is pivoted thereto with the operation, and a gate one side of which is en-'z free end thereof adapted to be disposed in the path of the manual'means during the setting gaged by v.the setting member .during the setting ting said timing and switch mechanism includ-' ing a setting member adapted to occupy positions both in and out of the path of the manual means, means for retaining the setting member .in the path of the manual means during the setting operation and-removing the setting memher out of the path of the manual means during the toasting operation, and means supporting the toast whereby the manual means may be operated tobring the toast to an inspection position during the toasting operation, the retaining means comprising a gate, the opposite sides of which are engaged by the setting member during the setting and toasting operations respectively, and spring means causing said setting member to follow the opposite sides of the gate during said operation.

'7. In an automatic electric toaster a timing and switch mechanism, means for manually setting said timing and switch mechanism including a setting member adapted to occupy positions both in and out of the path of the manual means, means for retaining the setting member in the path of the manual means during, the setting operation and removing the setting member out of the path of the manual means during the toasting operation, and means supporting the toast whereby the manual means may be operated to bring the toast to an inspection position during the toasting operation, the retaining means comprising a gate, the opposite sides of and at itsother end to the setting member.

8. In an electric toaster, a toaster frame having a toasting chamber, a rack for supporting toast and the like in said chamber, an elevator for lifting said rack and ejecting the toast together with spring means for actuating the elevator, a timing and switch mechanism which may be set to supply electrical current to the toaster for a predetermined time, a pawl for setting said t'ming and switch mechanism, manually operated means attached to said rack, said pawl 'in the oif' position being disposed in the path of said manually operated means for setting the timing and switch mechanism, spring means attached to said pawl tnding to move the pawl out of the path of the manual device during the setting operation, means retaining the pawl in the path of the manual device against the tension of said spring means during the setting operation, but after the, setting operation permitting the pawl to be swung out of the path of the manual means, said retaining means preventing the return of the pawl to a position in support the rack at the bottom -.of the toasting chamber during the toasting operation and for forth in claim 8 wherein the frame comprises a 5 guide post for the manual means and the rack and also the elevator. 10. In an electric toaster of the character set forth in claim 8 wherein the frame comprises a guide post for the manual means and the rack 10 and also the elevator, together with a plate having a guide slot parallel to the post for accommodating andguiding a locking pin carried by the elevator, said slot having a locking shoulder at the bottom for engaging the pin and holding the elevator in the toasting position against the tension of the spring.

11. In an electric toaster of the character set forth in claim 8 wherein the frame comprises a guide post for the manual means and the rack and also the elevator, together with a plate having a guide slot parallel to the post for accommodating and guiding a locking pin carried by the elevator, said slot having a locking shoulder at the bottom for engaging the pin and holding the elevator inthe toasting position against the tension of the spring, said elevator having a loose fit with the guide post and said elevating spring beng attached to the elevator in a manner to tilt the same and retain the pin under the shoulder during the toasting operation.

- 12. In an electric toaster of the character setforth in claim 8 wherein the frame comprises a plate with a curved slot ther'ein, together with a follower device disposed in said curved slot, said spring means being. attached. at one end to the pawl and at the other end to the follower device, said slot and said spring being arranged to urgethe setting pawl out of the path of the manual means during the setting operation and to urge the same towards a position in the path of the manual means on the return movement.-

13. In an electric toaster of the character set forth in claim -8 wherein theframe comprises a plate with a curved slot therein, together with 'a follower device disposed in said curved slot, 5 said spring means being attached at one end to the pawl and at the other end to the follower device, said slot and said spring being arranged to urge the setting pawl out of the path of the manual means during the setting operation and v to urge the same towards a position in the-path of the manual means on the return movement, and the retaining means comprises a gate parallel to the movement of the manual means and a pin carried by the pawl which rides on one side of the gate during the setting operation and on the other side of the gate during-the return ,movement.

14. In an electric toaster of the character set iiorth in claim 8 wherein a bumper device is disposed in the path of the manual device and rack to be engaged thereby when the elevator is actuated to the toast ejected position.

15. In an automatic electric toaster, a casing having a compartment for the reception of a slice of toast and an opening through which the toast may be liftedja liftable toast carrier. guided in said compartment together with a manually operated device for lowering and lifting the carrier, a timing and switch mechanism unit, a setting member for said unit having a part thereof disposed in the path of the manual device and engaged, thereby during the setting operation, said part being' adapted to follow a different path on the return movement, and means for compelling said operating member to follow said different path during thereturn and toasting operation and compelling said member to reoccupy its position in the path of the manual device at the end of the return and toasting operation. 5

16. In an electric toaster comprising a timing and switch mechanism, a frame having a compartment for the reception of a slice of toast and anopening through which the toast may be lifted, a liftable toast carrier guided'in said 10 compartment together with a manual device for manually lowering and lifting the carrier and setting said mechanism, a setting member for said mechanism disposed in the path of and engaged by a part of the carrier and the manual 15 device during the lowering of the carrier to set the timing and switch mechanism for a definite toasting period, and means preventing engagement between said setting member and said part after the setting operation is completed and dur- 20 ing the toasting period thus set, and thereby permitting the lifting and lowering of said carrier and manual device for toast inspection duringthe toasting operation without resetting or, interfering with said mechanism. 25

v 17. In an electric toaster comprising a timing and switch mechanism, a frame having a compartment for the reception of a slice of, toast and an opening through which the toast may be lifted, a liftable toast carrier guided in said com- 30 partment together with a manual device formanually lowering and lifting the carrier and setting said mechanism, a setting member for said mechanism disposed in the path" of and engaged by a part of the carrier and the manual device 35 I .during the lowering of the carrier to set the timing and switch mechanism for a definite toasting period, means preventing engagement between said setting member and said part after trier and manual device are actuated to set the 45 timing mechanism and lower the elevator, and means whereby said timing and switch mechanism trips said look at the end of the toasting period, thereby permitting toast inspection by manipulating the manual device without reset- 9 ting or interfering with the timing mechanism and without tripping the look.

18. In an automatic electric toaster a frame having a toasting chamber therein, a rack sup porting the toast in said chamber and a spring 55 actuated-ejector engagingsaidrack, guide means upon which the ejector is loosely mounted, a plate having a slot therein parallel to the guide means and having at the bottom thereof a lock.- v ing portion, said ejector having a pin following 6 said slot and adapted to be locked in thelower portion of said slot, an actuating ejector spring engaging said ejector and adapted to slightly tilt the same to cause. the pin to remain inthe I locking portion of the guide slot, and a timing mechanism for tripping the ejector.

19.-In an automatic electric toaster, atiming 1' I ing the setting operation and to follow a diflerent path during thetoasting operation, a menu:

- allyoperated device having a. part followingfthe first named path and adapted to pe a 5.5

gage the free end of said setting member, means for supporting toast within the toaster and operative connections between the manually 'operated device and the supporting means whereby the manual device may be operated to bring the toast to an inspection position.

20. In an automatic electric toaster, a casing having a compartment for the reception of a slice of toast and an opening through which the toast may be lifted, a iiitable toast carrier guided in said compartment together with a manually operated device for lowering and lifting the carrier, a timing and switch mechanism unit, a setting member for said unit having a part thereotdisposedinthepathoithemanualdetoasting operation.

vice and engaged thereby during the setting operation, said part being adapted to follow a different path on the return movement, and means for compelling said operating member to follow said difierent path during the return and toasting operation and compelling said member to reoccupy its position in the path of the manual device at the end of the return and toasting operation and a spring actuated elevator for said carrier adapted to be locked in the lowermost position and means operated by the timing unit for releasing the elevator at the end of the ALLAN M. round.